Available for remote work
Research-oriented engineer · Manizales, Colombia
I’m Martín Ramírez Espinosa—an Electronic Engineering and Mathematics student building inspectable research and machine-learning systems, local-first products, and reliable software.
Available for remote internships, part-time engineering roles, and focused contracts alongside my studies in Colombia.
Selected work
Research systems · AI
Scholarly research, with receipts.
A terminal workspace that turns ambiguous research questions into curated, cited literature dossiers while preserving human approval, retrieval provenance, evidence level, and exact supporting passages.
Language models · Reproducible research
A GPT-style language-model lab built from scratch.
An inspectable PyTorch implementation spanning tokenization, causal attention, training, generation, controlled baselines, sealed evaluation, and reproducible experiment artifacts.
Desktop product · Privacy
Instagram relationship analytics without an Instagram login.
A local-first desktop application that turns official Instagram exports into searchable relationship snapshots without scraping, telemetry, cloud processing, or unofficial APIs.
Technical notes
RAGdoll · Architecture note
How provider, scholarly-source, storage, evidence, and terminal boundaries preserve user control and keep model output outside domain logic until validation succeeds.
Read the artifactsmaLLM · Experiment report
The preregistered final comparison of boundary-aware ByteBPE512 and matched character controls, including every seed, corpus, checkpoint identity, reversal, and limitation.
Read the artifactOne engineering method
Keep models, parsers, storage, hardware, and user approval behind contracts that can be inspected.
Prefer controlled comparisons, reproducible artifacts, and documented negative results over impressive anecdotes.
Keep sensitive data local, permissions visible, and failure states honest instead of hiding uncertainty.
What comes next
I’m available for remote internships, part-time engineering roles, and focused contracts alongside my Electronic Engineering and Mathematics studies in Colombia.